]> git.baikalelectronics.ru Git - kernel.git/commit
drm/i915: Enable pipe HDR mode on ICL if only HDR planes are used
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 12 Apr 2019 18:30:09 +0000 (21:30 +0300)
committerVille Syrjälä <ville.syrjala@linux.intel.com>
Tue, 30 Apr 2019 19:14:43 +0000 (22:14 +0300)
commit86154fe3da3fe34206206544a7ce811c3a961e70
tree98ec25ffe9c765c844753a9dec4956a9d1604f56
parent3c6557c3c95788d58d84d534af185415da2bf508
drm/i915: Enable pipe HDR mode on ICL if only HDR planes are used

The pipe has a special HDR mode with higher precision when only
HDR planes are active. Let's use it.

Curiously this fixes the kms_color gamma/degamma tests when
using a HDR plane, which is always the case unless one hacks
the test to use an SDR plane. If one does hack the test to use
an SDR plane it does pass already.

I have no actual explanation how the output after the gamma
LUT can be different between the two modes. The way the tests
are written should mean that the output should be identical
between the solid color vs. the gradient. But clearly that
somehow doesn't hold true for the HDR planes in non-HDR pipe
mode. Anyways, as long as we stick to one type of plane the
test should produce sensible results now.

v2: s/HDR_MODE/HDR_MODE_PRECISION/ (Shashank)

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190412183009.8237-2-ville.syrjala@linux.intel.com
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Tested-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Shashank Sharma <shashank.sharma@intel.com>
drivers/gpu/drm/i915/i915_reg.h
drivers/gpu/drm/i915/intel_display.c
drivers/gpu/drm/i915/intel_sprite.h